Elastic cord



(No Model.)

J.W. GREEN, Jr., 8a C. H. CASWELL.

BLASTIG CORD.

No. 377,027. Patented Jan. 81, 1888.

N. PETERS, Phunfmhugmpher. wnmnglun. D. c.

ilivirn rares JOSEPH XV. GREEN, JR., AND CHARLES H. CASVELL, OF EASTHAMPTON, MASSACHUSETTS.

ELASTIC CORD.

SPECIFICATION forming part of Letters Patent No. 377,027, dated January 31, 1888.

(No specimens.)

1ro @ZZ whom, it may concern:

Be it known that we, JosEPH W. GREEN, Jr., and CHARLES l-I. CAswELL, citizens of the United States, residing at Easthainpton, in the county of Hampshire and State of Massachusetts, have invented certain new and useful Improvements in Elastic Cords, of which the following is a specification, reference being had therein to the-accompanying drawings.

Our improved elastic cord belongs to that class of cords having a core and a braided covering. To econoniize in the use of rubber threads in inaking comparatively large coi'ds We prefer to forin the core of our cord partly of fibrous threads and partly of rubber threads. The fibrous threads, in addition to giving strength and back to the core, also serve to liniit the elasticity of stretch of the cord when the latter is distended, so that the rubber threads will not be broken or weakened by a distention greater than that to which they are subjected when under the tension required in braiding. The braided covering of our cord consists of series of threadsnvith two or more threads in a series running in one di rectioii, these series of threads being interbraided by single threads running in the opposite direction. By thus arranging these coveringthreads our cord is given an attractive figured appearance, which is particularly handsome and strongly marked when colored threads are employed.

In the drawings, Figure l is a side view illustrating our improved cord. Fig. 2 represents the braided covering thereof iiattencd ont; and Fig. 3 is a cross section of the cord.

All of the figures are on an enlarged scale.

The cord herein illustrated shows our iiivention in its preferred forni, the braided covering consisting of sixteen fibrous threads. The threads a, which run in one direction and which may be termed the warp-threads,7 are shown as being iii four series of three each, these series of threads being ciossed or interwoven by four threads, b, which niay be ternied the weft77 or binder threads, running in the opposite direction. By disposing the threads a in series of two or niore cach and treating each of these series of threads as single threads in crossing or iiiterbraiding t-heni by the threads I) a pleasing ligure is produced, and this attractive appearance of the braiding-coveriiigis particularly well marked where the alternate series of the threads a are of different eolors from each other and where the threads b are of still different colors. Thus by using alternate series of red and white threads a and blue weft or binder threads b a very pretty effect is produced.

The core of our cord consists, preferably, of rubber threads e and fibrous or non-elastic threads d, the latter serving to give strength to the core as well as to limit the distention of the cord when stretched,as hereinbefore stated.

lt will be readily understood by those skilled in the art to which our invention relates that our braid, formed in the manner above described, is produced b'y causing a greater number of threadearriers of a braiding-machine to travel in one direction than in the other, or by causing three threadcarriers traveling in the same direction to follow each other in succession before their tracks are crossed by a carrier traveling in the opposite direction. Of course it will be understood that we may vary the numbers or proportions of thethreads from those herein shown and described without departing from the spirit of our invention.

XVe are aware of the covered straw braid shown by patent to Friend, No. 272,229, February 13, 1883, which is ornaniented by an open iiieshed braided covering consisting of plain and ornaniental threads or cords of dif ferent sizes running in opposite directions.

l This covering, however, differs from ours in that the straw cere is but partly concealed and the surface foriiicd by the covering is not sniooth, in our cord the covering being sinootli and unbroken and serving to entirely conceal the core even when the cord is distended.

NVe claini and desire to secure by Letters Patentl. An elasticv cord having a sniooth unbroken braided covering consisting of series of threads, with two or niore threads in a series running in one direction, said series of threads being crossed or interbraided by single threads running in an opposite direction, substantially as set forth.

2. An elastic cord consisting of a core coni- IOO posedvpartly of fibrous or non-e1astio threads In testimony whereof We afl'ix our signatures and partly of rubber threads, and a smooth in presence of two Witnesses.

unbroken braided covering consisting of series JOSEPH W. GREEN, JR.

of threads with two or more threads in a se- I CHARLES H. CASWELL. 5 ries running in one direction and single in- Witnesses:

terbraiding threads running in the opposite EMI-L G. KOENIG,

direction, substantially as set forth. I `ALBERT W. LooKE. 

